Mathematics
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    (589.5-1677i)*(1+i)^15-589.5+75i=0
    (655-1677i)*(1+i)^15-655+75i=0
    (655-1844.7i)*(1+i)^15-655+75i=0
    (655-2012.4i)*(1+i)^15-655+75i=0
    x*x-870x+105073=0
    943.1=32*(1-(1/(1+Ry/2)^32))/(Ry/2)+1000*(1/(1+Ry/2)^32)
    (x^2+2)÷x=4
    x^6-6x^4+9x^3-60x-7=0
    (2000-110)÷(1+(3/4))=x
    (200-110)÷(1+(3/4))=x
    x*x/4+x*x=12
     X^3-0.1×10^(-3)X^2-1.125×10^(-8)X+10^(-12) = 0
    (200-1100)÷(1+(3/4))=x
    9x²-6x+1=0
    (100x+5)(100x+5)=10000*10000*(0.004-x)*(0.001-x)
    (100x+5)(100x+5)=(0.004-x)*(0.001-x)
    (100x+5)=(0.004-x)*(0.001-x)
    x-285=(x-25)/21
    9x²-22x+1=0
    3x²-16x+5=0

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